1 Faculty of Medicine and Health, Sydney School of Public Health, The University of Sydney, Camperdown, NSW, Australia.
2 The Charles Perkins Center, The University of Sydney, Camperdown, NSW, Australia.
3 Department of Kinesiology and Community Health, College of Applied Health Sciences, University of Illinois Urbana-Champaign, Urbana-Champaign, IL, USA.
4 Milken Institute School of Public Health, The George Washington University, Washington, DC, USA.
5 Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center at Houston, Houston, TX, USA.
6 Department of Kinesiology and Health Education, The University of Texas at Austin, Austin, TX, USA.